NUCLEAR FUSION REACTOR FIRST WALL COMPONENT AND PRODUCTION PROCESS THEREOF

摘要

A nuclear fusion reactor first wall component includes a copper alloy element, an intermediate metal layer made from niobium and a beryllium element, directly in contact with the intermediate metal layer. The intermediate niobium layer is further advantageously associated with a mechanical stress-reducing layer formed by a metal chosen from copper and nickel. This mechanical stress-reducing layer is in particular arranged between the intermediate niobium layer and the copper alloy element. Furthermore, when the mechanical stress-reducing layer is made from pure copper, a layer of pure nickel can be inserted between the niobium and the pure copper before diffusion welding. Such a component presents the advantage of having an improved thermal fatigue behaviour while at the same time preventing the formation of intermetallic compounds at the junction between the beryllium and the copper alloy.

主权项

1. A nuclear fusion reactor first wall component provided with a stack successively comprising:
a copper alloy element, an intermediate metal layer formed by niobium, and a beryllium element, directly in contact with the intermediate metal) layer,wherein the stack comprises a mechanical stress-reducing layer, formed by a metal chosen from copper and nickel and arranged between the intermediate metal layer and the copper alloy element.